Package org.apache.wicket.spring.injection.annot

Class AnnotProxyFieldValueFactory

  • All Implemented Interfaces:
    org.apache.wicket.injection.IFieldValueFactory
    public class AnnotProxyFieldValueFactory
extends Object
implements org.apache.wicket.injection.IFieldValueFactory
    IFieldValueFactory that uses LazyInitProxyFactory to create proxies for Spring dependencies based on the SpringBean annotation applied to a field. This class is usually used by the SpringComponentInjector to inject objects with lazy init proxies. However, this class can be used on its own to create proxies for any field decorated with a SpringBean annotation.

    Example: 

     IFieldValueFactory factory = new AnnotProxyFieldValueFactory(contextLocator);
 field = obj.getClass().getDeclaredField("dependency");
 IDependency dependency = (IDependency)factory.getFieldValue(field, obj);
    In the example above the dependency object returned is a lazy init proxy that will look up the actual IDependency bean from spring context upon first access to one of the methods.

    This class will also cache any produced proxies so that the same proxy is always returned for the same spring dependency. This helps cut down on session size beacause proxies for the same dependency will not be serialized twice.

    Author:
    Igor Vaynberg (ivaynberg), Istvan Devai, Tobias Soloschenko
    See Also:
    LazyInitProxyFactory, SpringBean, SpringBeanLocator, Inject

    • Constructor Detail

      • AnnotProxyFieldValueFactory

        public AnnotProxyFieldValueFactory​(ISpringContextLocator contextLocator,
                                   boolean wrapInProxies)
        Parameters:
        contextLocator - spring context locator
        wrapInProxies - whether or not wicket should wrap dependencies with specialized proxies that can be safely serialized. in most cases this should be set to true.

    • Method Detail

      • getFieldValue

        public Object getFieldValue​(Field field,
                            Object fieldOwner)
        Specified by:
        getFieldValue in interface org.apache.wicket.injection.IFieldValueFactory

      • getBeanDefinition

        public org.springframework.beans.factory.config.BeanDefinition getBeanDefinition​(org.springframework.beans.factory.config.ConfigurableListableBeanFactory beanFactory,
                                                                                 String name)

      • supportsField

        public boolean supportsField​(Field field)
        Specified by:
        supportsField in interface org.apache.wicket.injection.IFieldValueFactory